It would be great if you could help us improve the theme. GitHub does a great job in managing collaboration by providing different tools, the only thing you need is a GitHub login.
- Use Pull requests to add or update code
- Issues for bug reporting or code discussions
- Or regarding documentation and how-to's, check out Wiki
More info on how to work with GitHub on help.github.com.
The module is licensed under MIT. In short, this license allows you to do everything as long as the copyright statement stays present.